a) Ambiguous communication or wrong form b) No reply to communication under Article 101 EPC c) Wrong type of communication d) Period set for opponent to reply to patentee's response e) Observations not forwarded to other party f) Appointment of professional representative g) Warning in relation to a grace period Source: http://www.epo.org/law-practice/legal-texts/html/caselaw/2019/e/clr_v_a_9_5_17.htmDate retrieved: 17 May 20219 references found. Click X to load a reference inside the current page, click on the title to open in a new page.Case Law Book: V PriorityXCLR V A Appeal procedureLoading...XCLR V A 9.5 Substantial procedural violationLoading...XCLR V A 9.5.17.A Ambiguous communication or wrong formLoading...XCLR V A 9.5.17.B No reply to communication under Article 101 EPCLoading...XCLR V A 9.5.17.C Wrong type of communicationLoading...XCLR V A 9.5.17.D Period set for opponent to reply to patentee's responseLoading...XCLR V A 9.5.17.E Observations not forwarded to other partyLoading...XCLR V A 9.5.17.F Appointment of professional representativeLoading...XCLR V A 9.5.17.G Warning in relation to a grace periodLoading...